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Experimental study of a three-dimensional cylinder–filament system

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Abstract

This experimental study reports on the behavior of a filament attached to the rear of a three-dimensional cylinder. The axis of the cylinder is placed normal to a uniform incoming flow, and the filament is free to move in the cylinder wake. The mean position of the filament is studied as a function of the filament length L. It is found that for long (L/D \(>\) 6.5, where D is the cylinder diameter) and short (L/D \(<\) 2) filaments, the mean position of the filament tends to align with the incoming flow, whereas for intermediate filament lengths (2 \(<\) L/D \(<\) 6.5), the filament lies down on the cylinder and tends to align with the cylinder axis. The underlying mechanism of the bifurcations is discussed and related to buckling and inverted-pendulum-like instabilities.

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Authors and Affiliations

  1. Linné FLOW Centre, KTH Mechanics, Royal Institute of Technology, 100 44, Stockholm, Sweden

    Nicolas Brosse, Carl Finmo, Fredrik Lundell & Shervin Bagheri

Authors
  1. Nicolas Brosse
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  2. Carl Finmo
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  3. Fredrik Lundell
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  4. Shervin Bagheri
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Correspondence to Nicolas Brosse.

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Brosse, N., Finmo, C., Lundell, F. et al. Experimental study of a three-dimensional cylinder–filament system. Exp Fluids 56, 130 (2015). https://doi.org/10.1007/s00348-015-2002-y

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  • DOI: https://doi.org/10.1007/s00348-015-2002-y

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